Panasonic VIERA TC-L42E30, Service Manual

Page: 15 / 72

15
7 Troubleshooting Guide
Use the self-check function to test the unit.
1. Checking the IIC bus lines
2. Power LED Blinking timing
7.1. Check of the IIC bus lines
7.1.1. How to access
Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control
for more than 3 seconds.
Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote con-
trol for more than 3 seconds.
7.1.2. Exit
Disconnect the AC cord from wall outlet.
7.1.3. Screen display
7.1.4. Check Point
Confirm the following parts if NG was displayed.
DISPLAY Check Ref. No. Description Check Point
PEAKS IC8000 PEAKS A-Board
TUN TU4800B TUNER A-Board
AVSW IC3001 AV SWITCH A-Board
STBY IC8000 PEAKS (STM) A-Board
MEM1 IC8902 EEPROM (PEAKS) A-Board
MEM2 IC8901 EEPROM (STM) A-Board
ZWEI ZWEI2 LCD PANEL
ID ID